[Proximal iliotibial band tear: a case report in an amateur football player].

The iliotibial band originates from the iliac crest and the hip joint capsule, extending along the entire lateral surface until it inserts onto tuberculum anterolateralis tibiae on the anterolateral tibia. It acts as an agonist of the anterior cruciate ligament. In short, the iliotibial band primarily contributes to the lateral stabilization of the knee joint. One of the main causes of iliotibial band tear is sports-related injuries. Isolated iliotibial band tear is rare due to the specific requirement of pure varus stress for its occurrence, involving a combination of knee joint flexion with internal rotation. Diagnosing this condition is challenging due to its rarity and difficult clinical suspicion. We present a case of 51-year-old male patient, amateur football player, with proximal iliotibial band tear. The clinical presentation, radiographic and Magnetic Resonance Imaging (MRI) findings, treatment and return to play are discussed.